Crispus, you have a fairly classic problem. Anybody trying to promote ebikes has to go the extra mile and reach out to help the customer as much as they can. The batteries are the Achilles's heal of the ebike business in many ways. If you abused the battery it should be rather obvious.
I believe that this industry needs much more documentation and much better dealer training because most problems should be handled on the local level. Shipping batteries back to the factory nowadays is a very costly problem and I'm sure stories like yours will discourage others from venturing into the wonderful world of ebiking. I do hope you will find a solution and wish you the best because ebiking is so much fun and beats the hell out of drive a gas guzzler.